装药参数对矩形射孔弹侵彻性能的影响机理

Impact Mechanism of Filling Dynamite Parameters on Rectangular Perforating Bullet

研究装药参数对矩形射孔弹侵彻性能的影响机理。对矩形射孔弹装药参数(药型罩厚度、张角,壳体内部结构)形成聚能切割刀的过程进行数值模拟,分析了装药参数对射流结构特征、射流的速度梯度及侵彻深度的影响。结果表明,改变壳体内部结构会改变射流结构特征;药型罩在压垮后形成高速且速度梯度小的主侵彻体有利于提高矩形射孔弹的侵彻能力;药型罩壁厚为3 mm,张角为55°时,矩形射孔弹的侵彻性能最好。

Impact mechanism of filling dynamite parameters on rectangular perforating bullet was studied Numerical simulation of charge jet formation of structural parameters of linear charge （linear angle, thickness, and internal structure of the shell） was carried out. The influence of different structural parameters of the linear charge on output of detonation wave, velocity gradient distribution and head velocity of the jet, and penetration depth was analyzed. Results indicate that changing the internal structure of the shell will change the output structure of the jet. The main penetration body with high speed and low velocity gradient is advantageous to improve penetration ability. The penetration ability reaches the climax when the cover is 3 mm thick at 55°angle.